iCU - Version 3.03 A desktop IN-AND-OUT board, providing an instant reference of who's in or out of your organisation. Ideal for businesses that operate with a LAN, iCU tells you where your colleagues are, without you having to leave your desk. While running iCU, any user on your network simply chooses their status from a list including "Available", "Away from desk", "In a meeting", or even "Do Not Disturb."